Chair



FIG. 1 is a perspective view of the ornamental appearance of the chair;

FIG. 2 is a front view of the chair shown in FIG. 1;

FIG. 3 is a side view of the chair shown in FIG. 1; and,

FIG. 4 is a top view of the chair shown in FIG. 1.

Any dashed-line surfaces or surfaces of the design not shown, including interior or bottom surfaces, form no part of the claimed invention. 

I claim the ornamental design for a chair, as shown and described. 